Item specifics:

NO.	Item			Specifications
4.1	Nominal capacity			16 Ah             0.2C Discharge
4.2	Initial Impedance			≤1Ω
4.3	Weight			Approx:5 kg
4.4	Nominal voltage           Fully charge voltage(FC)   Fully discharge voltage(FD)			48 V 54.6V            Defined in this DOC: FC = 54.6V 36.4 V            Defined in this DOC: FD =36.4 V
4.5	Standard charge current			0.2C
4.6	Shipment voltage			39V~48V
4.7	Standard charging method			0.2C CC(constant current)charge to FC, then CV(constant voltage FC)charge till charge current decline to ≤0.01C
4.8	Charging time			Standard Charging Approx 3 hours
4.9	Standard Discharge Current			Constant current 0.2 C  end voltage FD
4.10	Max. charge current		0ºC~15ºC	3C
			15ºC~25ºC	3C
			25ºC~45ºC	3C
4.11	Max. discharge current		-10ºC~15ºC	0.5C
			15ºC~60ºC	0.5C
4.12	Charge cut-off voltage			Ref. 8.1 VDET1
4.13	Discharge cut-off Voltage			Ref. 8.1 VDET2
4.14	Storage temperature	-20ºC~60ºC		≤1 month
		-20ºC~45ºC		≤3 month
		-20ºC~28ºC		≤1 year
4.15	Recoverable capacity			Constant current 0.5C charge to FC, then constant voltage FC charge to current declines to 0.01C, rest for 10min,constant current 0.5C discharge to FD,rest for 10min.Repeat above steps 3 times, recording the maximum capacity
4.16	Storage Humidity			≤75% RH
4.17	Appearance			Without distortion and leakage
4.18	Standard testing condition			Temperature             : 23±5ºC Humidity               :  ≤75%RH Atmospheric Pressure     : 86-106 Kpa

FAQ
1. Why choose Wanhong?
Wanhong is one of the best battery manufacturers in Shenzhen,China. Wanhong has developed several lines of standard battery packs and systems to fit a variety of customer requirements, from lithium batteries to grid-connected systems.  If one of the standard batteries below does not satisfy your needs, Wanhong also designs and produces custom batteries or multi-cell building block that could be the right solution.Wanhong's high quality management material is integrated into every type of battery, improving cycle life, performance, and safety.
 
2. What is our main products?
Professional Production All Battery System,
3.2V ~ 330V , 5AH ~ 500AH Battery Pack,
Li-polymer battery.LiFePo4, Lithium ion,Solar energy battery. Electric bicycle battery,
Welcome your order to test our quality and service.
 
3. What's the warranty of battery?
1-2 year under normally use.
 
4. What about the lead time?
Sample : within 5-7 working days. Bulk order: within3-4 weeks.
 
5. Do you have any MOQ limit?
No have MOQ, samples are welcome for your testing,  sample fees could be retunred on bulk order.
 
6. What kind of certification could you provide?
CE, RoHS, UN38.3. UL. We also could apply other certication that you need.
 
7. Can you accept OEM& ODM?
Sure, we are a manufacturer and has profressional R&D Department, welcome your OEM &ODM order.
 
8. What is the shipping way? 
Base on your requirement of Order Quantity, Lead Time & Freight fee, we often chose from Air, Sea & Express.